ARM: clps711x: Moving backlight controls of framebuffer driver to the board
This patch moves the backlight controls for clps711x-framebuffer driver to the board code. To control we use "generic-bl" driver. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> [olof: fixed space/tab whitespace in drivers/video/clps711xfb.c] Signed-off-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Alexander Shiyan
Olof Johansson
parent
e377ca1e32
commit
94760bf252
@ -13,6 +13,7 @@
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#include <linux/memblock.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <linux/backlight.h>
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#include <linux/platform_device.h>
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#include <asm/setup.h>
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@ -30,6 +31,7 @@
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#define EDB7211_LCD_DC_DC_EN CLPS711X_GPIO(3, 1)
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#define EDB7211_LCDEN CLPS711X_GPIO(3, 2)
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#define EDB7211_LCDBL CLPS711X_GPIO(3, 3)
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#define EDB7211_CS8900_BASE (CS2_PHYS_BASE + 0x300)
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#define EDB7211_CS8900_IRQ (IRQ_EINT3)
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@ -56,9 +58,22 @@ static struct plat_lcd_data edb7211_lcd_power_pdata = {
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.set_power = edb7211_lcd_power_set,
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};
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static void edb7211_lcd_backlight_set_intensity(int intensity)
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{
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gpio_set_value(EDB7211_LCDBL, intensity);
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}
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static struct generic_bl_info edb7211_lcd_backlight_pdata = {
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.name = "lcd-backlight.0",
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.default_intensity = 0x01,
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.max_intensity = 0x01,
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.set_bl_intensity = edb7211_lcd_backlight_set_intensity,
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};
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static struct gpio edb7211_gpios[] __initconst = {
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{ EDB7211_LCD_DC_DC_EN, GPIOF_OUT_INIT_LOW, "LCD DC-DC" },
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{ EDB7211_LCDEN, GPIOF_OUT_INIT_LOW, "LCD POWER" },
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{ EDB7211_LCDBL, GPIOF_OUT_INIT_LOW, "LCD BACKLIGHT" },
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};
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static struct map_desc edb7211_io_desc[] __initdata = {
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@ -117,6 +132,9 @@ static void __init edb7211_init(void)
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platform_device_register_data(&platform_bus, "platform-lcd", 0,
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&edb7211_lcd_power_pdata,
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sizeof(edb7211_lcd_power_pdata));
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platform_device_register_data(&platform_bus, "generic-bl", 0,
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&edb7211_lcd_backlight_pdata,
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sizeof(edb7211_lcd_backlight_pdata));
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platform_device_register_simple("video-clps711x", 0, NULL, 0);
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platform_device_register_simple("cs89x0", 0, edb7211_cs8900_resource,
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ARRAY_SIZE(edb7211_cs8900_resource));
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@ -81,10 +81,4 @@
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#endif /* CONFIG_ARCH_EDB7211 */
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/*
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* Relevant bits in port D, which controls power to the various parts of
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* the LCD on the EDB7211.
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*/
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#define EDB_PD3_LCDBL (1<<3)
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#endif
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@ -25,6 +25,8 @@
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#include <linux/io.h>
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#include <linux/slab.h>
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#include <linux/leds.h>
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#include <linux/sizes.h>
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#include <linux/backlight.h>
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#include <linux/platform_device.h>
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#include <linux/mtd/partitions.h>
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#include <linux/mtd/nand-gpio.h>
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@ -33,7 +35,6 @@
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#include <asm/pgtable.h>
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#include <asm/page.h>
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#include <asm/setup.h>
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#include <asm/sizes.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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@ -103,6 +104,21 @@ static struct plat_lcd_data p720t_lcd_power_pdata = {
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.set_power = p720t_lcd_power_set,
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};
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static void p720t_lcd_backlight_set_intensity(int intensity)
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{
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if (intensity)
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PLD_PWR |= PLD_S3_ON;
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else
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PLD_PWR = 0;
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}
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static struct generic_bl_info p720t_lcd_backlight_pdata = {
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.name = "lcd-backlight.0",
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.default_intensity = 0x01,
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.max_intensity = 0x01,
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.set_bl_intensity = p720t_lcd_backlight_set_intensity,
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};
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/*
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* Map the P720T system PLD. It occupies two address spaces:
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* 0x10000000 and 0x10400000. We map both regions as one.
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@ -187,6 +203,9 @@ static void __init p720t_init(void)
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platform_device_register_data(&platform_bus, "platform-lcd", 0,
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&p720t_lcd_power_pdata,
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sizeof(p720t_lcd_power_pdata));
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platform_device_register_data(&platform_bus, "generic-bl", 0,
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&p720t_lcd_backlight_pdata,
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sizeof(p720t_lcd_backlight_pdata));
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platform_device_register_simple("video-clps711x", 0, NULL, 0);
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}
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@ -22,19 +22,15 @@
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#include <linux/mm.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/seq_file.h>
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#include <linux/slab.h>
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#include <linux/fb.h>
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#include <linux/init.h>
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#include <linux/proc_fs.h>
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#include <linux/delay.h>
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#include <mach/hardware.h>
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#include <asm/mach-types.h>
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#include <linux/uaccess.h>
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#include <mach/syspld.h>
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struct fb_info *cfb;
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#define CMAP_MAX_SIZE 16
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@ -162,25 +158,12 @@ clps7111fb_set_par(struct fb_info *info)
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static int clps7111fb_blank(int blank, struct fb_info *info)
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{
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if (blank) {
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if (machine_is_edb7211()) {
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/* Turn off the LCD backlight. */
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clps_writeb(clps_readb(PDDR) & ~EDB_PD3_LCDBL, PDDR);
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/* Enable/Disable LCD controller. */
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if (blank)
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clps_writel(clps_readl(SYSCON1) & ~SYSCON1_LCDEN, SYSCON1);
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else
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clps_writel(clps_readl(SYSCON1) | SYSCON1_LCDEN, SYSCON1);
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/* Disable LCD controller. */
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clps_writel(clps_readl(SYSCON1) & ~SYSCON1_LCDEN,
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SYSCON1);
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}
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} else {
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if (machine_is_edb7211()) {
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/* Enable LCD controller. */
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clps_writel(clps_readl(SYSCON1) | SYSCON1_LCDEN,
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SYSCON1);
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/* Turn on the LCD backlight. */
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clps_writeb(clps_readb(PDDR) | EDB_PD3_LCDBL, PDDR);
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}
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}
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return 0;
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}
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@ -195,62 +178,6 @@ static struct fb_ops clps7111fb_ops = {
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.fb_imageblit = cfb_imageblit,
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};
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static int backlight_proc_show(struct seq_file *m, void *v)
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{
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if (machine_is_edb7211()) {
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seq_printf(m, "%d\n",
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(clps_readb(PDDR) & EDB_PD3_LCDBL) ? 1 : 0);
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}
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return 0;
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}
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static int backlight_proc_open(struct inode *inode, struct file *file)
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{
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return single_open(file, backlight_proc_show, NULL);
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}
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static ssize_t backlight_proc_write(struct file *file, const char *buffer,
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size_t count, loff_t *pos)
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{
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unsigned char char_value;
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int value;
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if (count < 1) {
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return -EINVAL;
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}
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if (copy_from_user(&char_value, buffer, 1))
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return -EFAULT;
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value = char_value - '0';
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if (machine_is_edb7211()) {
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unsigned char port_d;
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port_d = clps_readb(PDDR);
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if (value) {
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port_d |= EDB_PD3_LCDBL;
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} else {
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port_d &= ~EDB_PD3_LCDBL;
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}
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clps_writeb(port_d, PDDR);
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}
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return count;
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}
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static const struct file_operations backlight_proc_fops = {
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.owner = THIS_MODULE,
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.open = backlight_proc_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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.write = backlight_proc_write,
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};
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static void __devinit clps711x_guess_lcd_params(struct fb_info *info)
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{
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unsigned int lcdcon, syscon, size;
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@ -359,22 +286,6 @@ static int __devinit clps711x_fb_probe(struct platform_device *pdev)
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fb_alloc_cmap(&cfb->cmap, CMAP_MAX_SIZE, 0);
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if (!proc_create("backlight", 0444, NULL, &backlight_proc_fops)) {
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printk("Couldn't create the /proc entry for the backlight.\n");
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return -EINVAL;
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}
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/*
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* Power up the LCD
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*/
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if (machine_is_p720t())
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PLD_PWR |= PLD_S3_ON;
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if (machine_is_edb7211()) {
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/* Turn on the LCD backlight. */
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clps_writeb(clps_readb(PDDR) | EDB_PD3_LCDBL, PDDR);
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}
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err = register_framebuffer(cfb);
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out: return err;
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@ -385,12 +296,6 @@ static int __devexit clps711x_fb_remove(struct platform_device *pdev)
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unregister_framebuffer(cfb);
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kfree(cfb);
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/*
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* Power down the LCD
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*/
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if (machine_is_p720t())
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PLD_PWR &= ~PLD_S3_ON;
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return 0;
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}
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